i have an older 2002 imedia computer and never had a problem with it.
all my hardware is industry standard stuff ie/gigabyte mobo,seagate hdd,phillips dvd etc and is easily upgraded if you want to.
my graphics (sis650) were onboard and rubbish for games.i upgraded to an agp card and got some more ram (512mb)and it performs much better.
the only bad thing with the allegra cases is there is not much room inside them,no space for a fan at the back or front either.i threw my case away and transfered everything to a new case.
the ami bios with my computer is also granny friendly ie/ no options to tweak things other than basic settings so if you like to play with settings,overclock etc steer clear.otherwise they are solid enough performers.